Lexmark C950 Service Manual

Diagnostic aids 3-57
5058-030
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Step 4: 1st Transfer
When the latent images are developed on each photoconductor, the high-voltage power supply sends voltage to
the 1st transfer rollers inside the transfer belt. The charge difference between the developed toner image on the
photoconductor surface and the 1st transfer roller causes the images to transfer to the surface of the transfer
belt for each color. This takes place by a direct surface-to-surface contact between the photoconductors and the
transfer belt.
Service tips
• Never touch the surface of the transfer belt with your bare hand. The oil from your skin will
cause a charge differential on the surface, and toner will not stick properly. The result would
be repeating blotches of voids/light print on a page. To solve this, the transfer belt must be
replaced.
• Don’t use solvents or other cleaners to clean the transfer belt surface. No matter how careful
you are, the surface will be compromised, causing scratches or a charge differential that will
produce a void or light blotch on the printed page. To solve this, the transfer belt must be
replaced.
HVPS
Transfer belt
1st transfer roll (Cyan)
Photo conductor drum(Cyan)

Lexmark C950 Specifications

General

Print Resolution	1200 x 1200 dpi
Duplex Printing	Yes
Processor Speed	1.2 GHz
Connectivity	Ethernet, USB
Print Technology	Laser
Print Speed	50 ppm
Monthly Duty Cycle	300000 pages
Recommended Monthly Page Volume	5, 000 - 33, 000 pages
Memory	1024 MB
Hard Drive	Optional
Output Capacity	500 sheets
Interface	USB 2.0
Media Type	Plain paper, Card stock, Labels, Envelopes, Transparencies
Total Media Capacity	5140 sheets
Media Sizes	Letter, Legal, A4, A5, Executive, Folio, Statement
Operating Systems Supported	Windows, Mac, Linux